Definition: In this task, you are given a text from a post. Your task is to find all of the proper nouns and label them. The labels are <B-PER>, <I-PER> for persons; <B-ORG>, <I-ORG> for organizations; <B-LOC>, <I-LOC> for locations; and <B-MISC>, <I-MISC> for other nouns. The capital 'B' denotes the first word of a proper noun phrase. The capital 'I' denotes all following words of the same noun phrase. If a word is not a part of a proper noun phrase, do not label it.
Input: The Greek socialist party 's executive bureau gave Prime Minister Costas Simitis its backing if he chooses to call snap elections , its general secretary Costas Skandalidis told reporters on Thursday . 

The Greek <B-MISC> socialist party 's executive bureau gave Prime Minister Costas <B-PER> Simitis <I-PER> its backing if he chooses to call snap elections , its general secretary Costas <B-PER> Skandalidis <I-PER> told reporters on Thursday . 